The Multivee person already answered your question, so I'm doing this just because the rules say we can't answer with only links.
Real types: normal, fire, water, electric, grass, ice, fighting, poison, ground, flying, psychic, bug, rock, ghost, dragon, dark, steel, fairy
source and type chart
Glitch types: 'l) m) ZM, ?, /6!2?2 A, ,K PkxX, 8 8 9 5, 99||9, B, Bird, CoolTrainer♀, Glitch, IIIItoto, Normal, Pokémaniac, Qi JT? POké BB de W N, x v zA, , ' ♀ ♀ ' 2222 37572, 66848.04, L
'l) m) ZM has the same type effectivenesses that steel has in generations 2 to 5. The other glitch types are neutral to everything.